US5112189A - Arrangement for connecting blower wheel - Google Patents

Arrangement for connecting blower wheel Download PDF

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Publication number
US5112189A
US5112189A US07/503,723 US50372390A US5112189A US 5112189 A US5112189 A US 5112189A US 50372390 A US50372390 A US 50372390A US 5112189 A US5112189 A US 5112189A
Authority
US
United States
Prior art keywords
disc
wheel
arrangement
flange
motor shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
US07/503,723
Other languages
English (en)
Inventor
Werner Halek
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schmetz GmbH and Co KG
Original Assignee
Schmetz GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Schmetz GmbH and Co KG filed Critical Schmetz GmbH and Co KG
Assigned to SCHMETZ GMBH & CO. KG UNTERNEHMENSVERWALTUNG, reassignment SCHMETZ GMBH & CO. KG UNTERNEHMENSVERWALTUNG, ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: HALEK, WERNER
Application granted granted Critical
Publication of US5112189A publication Critical patent/US5112189A/en
Assigned to SCHMETZ GMBH reassignment SCHMETZ GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: SCHMETZ GMBH & CO. K.G. UNTERNEHMENSVERWALTUNG
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/58—Cooling; Heating; Diminishing heat transfer
    • F04D29/582—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps
    • F04D29/5853—Cooling; Heating; Diminishing heat transfer specially adapted for elastic fluid pumps heat insulation or conduction
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/263—Rotors specially for elastic fluids mounting fan or blower rotors on shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
    • F04D—NON-POSITIVE-DISPLACEMENT PUMPS
    • F04D29/00—Details, component parts, or accessories
    • F04D29/26—Rotors specially for elastic fluids
    • F04D29/28—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps
    • F04D29/281—Rotors specially for elastic fluids for centrifugal or helico-centrifugal pumps for radial-flow or helico-centrifugal pumps for fans or blowers
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/50—Flanged connections
    • F16B2200/506—Flanged connections bolted or riveted

Definitions

  • the present invention relates to an arrangement for connecting a heat-resistant blower wheel located inside an oven.
  • a heat-resistant blower wheel which has a coaxial hollow projection provided at the side of the motor and filled with a ceramic fiber mass, and a coaxial flange arranged at its end and screwed with a metallic disc or ring with a perpendicularly extending motor shaft.
  • one feature of the present invention resides, briefly stated, in a connection for a blower wheel, in accordance with which the wheel and the hollow projection of the wheel are composed of a heat-resistant material, and a disc-shaped heat-resistant element is located between a flange of the wheel and a disc of a motor shaft.
  • the wheel and the projection are composed of carbon fiber-reinforced graphite
  • the heat-resistant element is composed of a graphite laminate and formed as a spring element.
  • a sufficient movement of the materials in the connecting region is obtained, when in the region of the mounting screws between the flange and the disc a disc-shaped graphite laminate is inserted in form of a springy element.
  • the blower connection is located behind the heat dam. However, it is heated by the loss energy escaping through the shaft and exiting through the passage gap in the heat dam, so that in a hot oven the thermal expansion of the metal parts in particular the disc and the screws occurs or shrinkage takes place during cooling of the oven. As a result, the screws are blocked when a non-elastic element is used for uniform tensioning of the screws, as in the prior art.
  • a simple connection of the motor shaft is achieved when a bush is provided on the disc and more particularly at its end facing away of the wheel, so that this shaft end extends into the bush in a form-locking manner.
  • the hollow space of the projection is filled with a ceramic fiber mass.
  • the ceramic fiber mass in the hollow space of the projection maintains the heat passage from the blower to the blower connection at a minimum degree.
  • An important advantage of the invention in addition to the continuous blower connection, is also in that it maintains a passage of the blower shaft through the heat dam which has low heat losses. Also, a high stability obtained due to the low weight of the wheel projection.
  • FIGURE of the drawings is a view showing an axial section of an arrangement for connecting a blower to a motor shaft, in accordance with the present invention.
  • a radial blower has a wheel or an impeller located in an oven chamber.
  • One side of the wheel is provided with a coaxial hollow projection, which is identified with reference numeral 1.
  • the projection 1 expands at its free end and forms a coaxial flange 2.
  • the flange 2 is provided with a plurality of openings 3 which are arranged preferably at uniform distances from one another.
  • the openings 3 are utilized for a screw connection as will be explained hereinbelow.
  • the projection 1 of the wheel is composed of a heat-resistance material, in particular a carbon-fiber reinforced graphite.
  • the inner space of the projection 1 is filled with a heat-resistant material, in particular a ceramic fiber mass.
  • a motor shaft of the blower is identified as S.
  • a metal disc 4 is supported by the motor shaft S and provided with a plurality of threaded openings 5.
  • the threaded openings 5 of the disc 4 are arranged in alignment with the openings 3 of the flange 2.
  • the ring-shaped flange 2 of the projection 1 is connected with the metal disc 4 of the motor shaft S by a plurality of screws 6 which are screwed through the openings 3 of the flange 2 into the threaded openings 5 of the disc 4. Thereby, the flange 2 and the disc 4 are clamped together.
  • Ring-shaped or disc-shaped elements 7 formed for example as spacing discs are located between the disc 4 and the flange 2 and surround the screws 6.
  • the elements 7 are composed of a graphite laminate which has a springy property, to maintain a tension between the flange 2 and the disc 4 under the action of the pressure applied by the screws 6. This mounting with the graphite laminate elements 7 permits limited movements of the flange 2 relative to the disc 4 in a radial and an axial direction.
  • a bush 8 is mounted on the disc 4 coaxially and at a side opposite to the blower. It has an inner surface which reduces conically inwardly. A correspondingly conically shaped end of the motor shaft is inserted in the bush 8. A torque is transmitted from the motor shaft to the bush through a key 9.
  • the inner end of the bush 8 is closed by a pressure disc 10.
  • a screw 11 extends coaxially through the pressure disc 10 and is screwed in a threaded opening 12.
  • the threaded opening 12 extends from an end side of the shaft into the shaft coaxially with the latter.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Structures Of Non-Positive Displacement Pumps (AREA)
US07/503,723 1989-04-03 1990-04-03 Arrangement for connecting blower wheel Expired - Fee Related US5112189A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3910674 1989-04-03
DE3910674A DE3910674C1 (enrdf_load_stackoverflow) 1989-04-03 1989-04-03

Publications (1)

Publication Number Publication Date
US5112189A true US5112189A (en) 1992-05-12

Family

ID=6377691

Family Applications (1)

Application Number Title Priority Date Filing Date
US07/503,723 Expired - Fee Related US5112189A (en) 1989-04-03 1990-04-03 Arrangement for connecting blower wheel

Country Status (4)

Country Link
US (1) US5112189A (enrdf_load_stackoverflow)
EP (1) EP0399144B1 (enrdf_load_stackoverflow)
AT (1) ATE81709T1 (enrdf_load_stackoverflow)
DE (1) DE3910674C1 (enrdf_load_stackoverflow)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100113170A1 (en) * 2008-11-05 2010-05-06 Rolls-Royce Deutschland Ltd & Co Kg Engine shaft for a gas-turbine engine
US9644685B2 (en) * 2015-04-09 2017-05-09 Ford Global Technologies, Llc Output shaft adapter

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19708825C2 (de) * 1997-03-05 2001-11-15 Deutsch Zentr Luft & Raumfahrt Vorrichtung zum Fördern eines Mediums
DE202012013596U1 (de) * 2012-08-13 2018-03-05 Schunk Kohlenstofftechnik Gmbh Bauteilverbindung mit zumindest zwei CFC-Komponenten
DE102012214405B4 (de) * 2012-08-13 2014-05-28 Schunk Kohlenstofftechnik Gmbh Umwälzvorrichtung zum Umwälzen einer umgebenden Atmosphäre sowie Verfahren zur Herstellung einer derartigen Umwälzvorrichtung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1555023A (en) * 1923-02-20 1925-09-29 Walter H Gahagan Flexible packing for centrifugal pumps
US2905093A (en) * 1954-08-12 1959-09-22 Union Carbide Corp Corrosion resistant pump
DE1428201A1 (de) * 1964-01-31 1968-12-12 Nordisk Ventilator Laufradnabe fuer Ventilator zur Foerderung heisser Gase
US4099890A (en) * 1975-08-21 1978-07-11 Mitsui Mining & Smelting Co., Ltd. Impeller type pump having seal means and protective means
US4536127A (en) * 1983-05-06 1985-08-20 Motoren-Und Turbinen-Union Turbocompressor provided with an abradable coating

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR873493A (fr) * 1941-06-20 1942-07-09 Neu Sa Moyeu parathermique, en particulier pour turbines de ventilateurs centrifuges
GB1090722A (en) * 1964-01-15 1967-11-15 Rolls Royce Method of making a bladed rotor for a fluid flow machine, e.g. a gas turbine engine
US4363602A (en) * 1980-02-27 1982-12-14 General Electric Company Composite air foil and disc assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1555023A (en) * 1923-02-20 1925-09-29 Walter H Gahagan Flexible packing for centrifugal pumps
US2905093A (en) * 1954-08-12 1959-09-22 Union Carbide Corp Corrosion resistant pump
DE1428201A1 (de) * 1964-01-31 1968-12-12 Nordisk Ventilator Laufradnabe fuer Ventilator zur Foerderung heisser Gase
US4099890A (en) * 1975-08-21 1978-07-11 Mitsui Mining & Smelting Co., Ltd. Impeller type pump having seal means and protective means
US4536127A (en) * 1983-05-06 1985-08-20 Motoren-Und Turbinen-Union Turbocompressor provided with an abradable coating

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100113170A1 (en) * 2008-11-05 2010-05-06 Rolls-Royce Deutschland Ltd & Co Kg Engine shaft for a gas-turbine engine
US8251830B2 (en) * 2008-11-05 2012-08-28 Rolls-Royce Deutschland Ltd Co KG Engine shaft for a gas-turbine engine
US9644685B2 (en) * 2015-04-09 2017-05-09 Ford Global Technologies, Llc Output shaft adapter

Also Published As

Publication number Publication date
EP0399144A1 (de) 1990-11-28
EP0399144B1 (de) 1992-10-21
DE3910674C1 (enrdf_load_stackoverflow) 1990-09-20
ATE81709T1 (de) 1992-11-15

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Legal Events

Date Code Title Description
AS Assignment

Owner name: SCHMETZ GMBH & CO. KG UNTERNEHMENSVERWALTUNG,, GER

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:HALEK, WERNER;REEL/FRAME:005368/0989

Effective date: 19900404

AS Assignment

Owner name: SCHMETZ GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:SCHMETZ GMBH & CO. K.G. UNTERNEHMENSVERWALTUNG;REEL/FRAME:007286/0183

Effective date: 19941205

REMI Maintenance fee reminder mailed
LAPS Lapse for failure to pay maintenance fees
FP Lapsed due to failure to pay maintenance fee

Effective date: 19960515

STCH Information on status: patent discontinuation

Free format text: PATENT EXPIRED DUE TO NONPAYMENT OF MAINTENANCE FEES UNDER 37 CFR 1.362